function XForms_bind(params,childNodes){
  XForms_Core.call(this, params);
  this.childNodes = childNodes;
  XForms.binds[this.getUID()]=this;
  //console.log(params.relevant,XForms.instances[0]);
  if(params.relevant){
    for(var i=0,l=XForms.instances.length;i<l;i++){
      XForms.instances[i].childNodes[0].resolveDependent(this, ["xforms-refresh-relevant"], params.relevant);
    }
  }
}
